Leo Famulari <leo@famulari.name> skribis:

> On Tue, Aug 18, 2015, at 17:54, Ludovic Courtès wrote:
>> What is the file system of /home/leo/work/guix (see the output of the
>> ‘mount’ command)?
>
> $ mount
> [...]
> /dev/mapper/hostname--vg-home on /home type btrfs (rw,relatime,space_cache)
> [...]

OK.

>> and then run “make check TESTS=tests/nar.scm” from the top-level build
>> directory, and post both the top-level ‘nar.log’ file and
>> ‘tests/nar.log’?
>
> The logs are attached. I renamed tests/nar.log to tests-nar.log.

Hmm the output of ‘find’ in tests/nar.log suggests that the files are
indeed identical, so maybe it’s ‘file-tree-equal?’ that’s not working as
expected.

Could you try this patch and send tests/nar.log again?